[INFO] fetching crate impedance 0.3.0...
[INFO] testing impedance-0.3.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate impedance 0.3.0 into /workspace/builds/worker-101/source
[INFO] validating manifest of crates.io crate impedance 0.3.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate impedance 0.3.0
[INFO] finished tweaking crates.io crate impedance 0.3.0
[INFO] tweaked toml for crates.io crate impedance 0.3.0 written to /workspace/builds/worker-101/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 307d09153cdccaffc5fcf1c1b1558a0b4cd76b0dc3a62fbafda3d47577ccc4d8
[INFO] running `Command { std: "docker" "start" "-a" "307d09153cdccaffc5fcf1c1b1558a0b4cd76b0dc3a62fbafda3d47577ccc4d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "307d09153cdccaffc5fcf1c1b1558a0b4cd76b0dc3a62fbafda3d47577ccc4d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "307d09153cdccaffc5fcf1c1b1558a0b4cd76b0dc3a62fbafda3d47577ccc4d8", kill_on_drop: false }`
[INFO] [stdout] 307d09153cdccaffc5fcf1c1b1558a0b4cd76b0dc3a62fbafda3d47577ccc4d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c76220a7c78716932a445c644e7a344558ed3553110fb6e85ac68566762c5ce
[INFO] running `Command { std: "docker" "start" "-a" "4c76220a7c78716932a445c644e7a344558ed3553110fb6e85ac68566762c5ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling tokio v1.17.0
[INFO] [stderr]    Compiling pin-project v1.0.10
[INFO] [stderr]    Compiling impedance v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.78s
[INFO] running `Command { std: "docker" "inspect" "4c76220a7c78716932a445c644e7a344558ed3553110fb6e85ac68566762c5ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c76220a7c78716932a445c644e7a344558ed3553110fb6e85ac68566762c5ce", kill_on_drop: false }`
[INFO] [stdout] 4c76220a7c78716932a445c644e7a344558ed3553110fb6e85ac68566762c5ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6220b61562925566a4c3d7493b76657347ede94e952e1aeb6c1f9030a941ebf8
[INFO] running `Command { std: "docker" "start" "-a" "6220b61562925566a4c3d7493b76657347ede94e952e1aeb6c1f9030a941ebf8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling cache-padded v1.2.0
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling fastrand v1.7.0
[INFO] [stderr]    Compiling event-listener v2.5.2
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling async-task v4.2.0
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling futures-sink v0.3.21
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.8
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling ctor v0.1.22
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling async-mutex v1.4.0
[INFO] [stderr]    Compiling async-lock v2.5.0
[INFO] [stderr]    Compiling async-channel v1.6.1
[INFO] [stderr]    Compiling async-executor v1.4.1
[INFO] [stderr]    Compiling blocking v1.2.0
[INFO] [stderr]    Compiling polling v2.2.0
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling async-io v1.6.0
[INFO] [stderr]    Compiling async-global-executor v2.0.4
[INFO] [stderr]    Compiling async-process v1.3.0
[INFO] [stderr]    Compiling async-std v1.11.0
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling futures-executor v0.3.21
[INFO] [stderr]    Compiling futures v0.3.21
[INFO] [stderr]    Compiling impedance v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 14.92s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/impedance-52dea80a953e28ec)
[INFO] running `Command { std: "docker" "inspect" "6220b61562925566a4c3d7493b76657347ede94e952e1aeb6c1f9030a941ebf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6220b61562925566a4c3d7493b76657347ede94e952e1aeb6c1f9030a941ebf8", kill_on_drop: false }`
[INFO] [stdout] 6220b61562925566a4c3d7493b76657347ede94e952e1aeb6c1f9030a941ebf8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c3cfd831b5bbd56617253cf70219a4d614b9efeb76b75d4a4610eeab53aac7f1
[INFO] running `Command { std: "docker" "start" "-a" "c3cfd831b5bbd56617253cf70219a4d614b9efeb76b75d4a4610eeab53aac7f1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.27s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/impedance-52dea80a953e28ec)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::test_basic ... ok
[INFO] [stdout] test tests::test_nested - should panic ... ok
[INFO] [stdout] test tests::test_panic_adaptive - should panic ... ok
[INFO] [stderr]    Doc-tests impedance
[INFO] [stdout] test tests::test_nested_comparison - should panic ... ok
[INFO] [stdout] test tests::test_panic_spawning - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 13) ... ignored
[INFO] [stdout] test src/adaptive/mod.rs - adaptive (line 12) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 1.74s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c3cfd831b5bbd56617253cf70219a4d614b9efeb76b75d4a4610eeab53aac7f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3cfd831b5bbd56617253cf70219a4d614b9efeb76b75d4a4610eeab53aac7f1", kill_on_drop: false }`
[INFO] [stdout] c3cfd831b5bbd56617253cf70219a4d614b9efeb76b75d4a4610eeab53aac7f1